drum brake [2]

Braking mechanism comprising a drum interlocked with the wheel; the brake shoes rub against the drum to slow down the wheel’s rotation.

drum

Part interlocked with the wheel so that the wheel slows its rotation when the brake shoes rub against the inside of the drum.

lug

Part for assembling and interlocking the drum and the wheel.

return spring

Spring returning the brake shoe to its initial position once the pressure on the brake pedal has ceased.

piston

Part that slides in the cylinder under hydraulic pressure and pushes the brake shoe against the drum.

anchor pin

Axle serving as an anchoring point for the brake shoe, enabling it to move when acted upon by the piston.

brake lining

Band of material attached to the brake shoe; heat resistant, it increases the frictional force on the drum.

backing plate

Fixed part serving as a mount for the brake shoes, cylinder and anchor pin.

wheel cylinder

Mechanism with a cylinder and two pistons that converts the hydraulic pressure in the master cylinder to mechanical force that is applied to the brake shoes.

brake shoe

Crescent-shaped part interlocked with an anchor pin; it is fitted with a lining, which moves against the interior surface of the drum to slow its rotation.